Welcome to East River Marine -

​East River Marine located on the Guilford and Madison town line along the Connecticut Shoreline, is proud to offer the expertise of our Yamaha Certified Master Technician; to be a fully-certified Yamaha Outboard Engine Dealer and operate a well-protected marina on the East River.

With easy access to the Long Island Sound right off of I-95, East River Marine is your "one-stop-shop" for all things Connecticut Yamaha Outboard Motors service and sales.

Yamaha Outboard Service: Whether it's Yamaha Outboard Engine Maintenance, Yamaha Engine Repower, Yamalube Outboard Supplies, Spring Commission or Winterization - our Certified Master Technician has the expertise you need. Not a Yamaha Outboard owner or need other boat work done, no problem - East Marine does it all and backs it with our satisfaction guarantee!

Yamaha Outboard Sales: Looking to Yamaha Outboard Repower? Our experts provide and install the full line of Yamaha Outboard Engines, from the Yamaha F150, to the Yamaha V8 F350, to the family of Midrange Four Strokes, to the In-Line Four, to Portable Four Strokes, East River Marine has you covered!

Slips: Located a quick trip down the East River to Long Island Sound, our sheltered marina includes 30 slips, electricity & fresh water and the facility includes flushable toilets.